c) Construct the confidence interval. (Round to three decimal places as needed.)
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Help me solve for C?
![Use the sample data and confidence level given below to complete parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2395 subjects randomly selected from an online group involved with
ears. 1008 surveys were returned. Construct
90% confidence interval for the proportion of returned surveys.
E Click the icon to view a table of z scores.
a) Find the best point estimate of the population proportion p.
0.421
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
E= 0.017
(Round to three decimal places as needed.)
c) Construct the confidence interval,
(Round to three decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5967a382-2d07-4525-b746-71c6030fad2f%2Fff70016d-b610-466f-b29e-a9b6bc896c1b%2Fva7mlqj_processed.png&w=3840&q=75)
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2395 subjects randomly selected from an online group involved with
ears. 1008 surveys were returned. Construct
90% confidence interval for the proportion of returned surveys.
E Click the icon to view a table of z scores.
a) Find the best point estimate of the population proportion p.
0.421
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
E= 0.017
(Round to three decimal places as needed.)
c) Construct the confidence interval,
(Round to three decimal places as needed.)
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